Fourths to joseph ii



J. F. KESTER.

DETACHABLE BRUSH HOLDER FOR. DYNAMOS.

(No Model.)

Patented June 4, 1889.

WI T JV ESSES I ew 0&6

UNITED STATES PATENT OFFICE.

JESSE F. KESTER, OF TERRE IIAUTE, INDIANA, ASSIGNOR OF THREE- FOURTHS TO JOSEPH Il. BRIGGS, OF SAME PLACE.

DETACHABLE BRUSH-HOLDER FOR DYNAMOS.

SPECIFICATION forming part of Letters Patent No. 404,712, dated June 4, 1889.

Application filed October 29, 1888. Serial No. 289,408. (No model.)

To all whom, it may concern:

Be it known that I, JESSE F. KESTER, of Terre ll'aute, in the eountyof Vigo and State of Indiana, have invented certain new and useful Improvements in Detachable Brush- Holders for Dynamos; and I do hereby declare that the following is a full, clear, and. exact description of the invention, which will enable others skilled in the art to which. it appertains to make and use the same, reference bcinghad to the accompanying drawings, and to the let ters of reference marked thereomwhich form part of this specification.

My invention relates to an improved attachment for d ynamo-electric machines or motors, and more especially relates to a detachable brush-holder support and immediate attachments.

The invention consists in certain novel features of construction and combinations of parts, more fully described hereinafter, and particularly pointed out in the claims.

Referring to the accompanying drawings, Figure l is a vertical section of an armatureshaft bearing or journal-box, showing the detaehable brush-holder support and attach ments. Fig. 2 is a detail perspective view of the armature-shaft journal-box, the adjustable collar and detachable brush-holder support being removed. Fig. 3 is a detail perspective view of the adjustable collar and detachable brushholder support detached from each other and from the journal-box.

In the drawings, the reference-letter aindi cates a journal-box for an armature-shaft, provided with the usual bearing, and in the present case with a base of any ordinary construction. A duct?) leads from the upper exterior of the journal-box to the upper portion of the bearing, whereby lubricating-fluid can be conveyed to the shaft and bearing. Z) indicates what might be termed a dischargeduct for the lubricatingmaterial, and extends from the bottom of the bearing, preferably, through the base of the j ournal-box to discharge the waste at any suitable spot. Near its outer interior the bearing is provided with an annular groove to prevent the lubricant from escaping, and the bottom of the bearing is preferably inclined slightly downwardly and centrally and terminates in the discharge-duct I). (See Fig. 1.) The inner end of thej ournal-box is reduced in thickness around the journal, forming an annular flange 0 around the same and a shoulder around the inner portion of the flange, and said reduced portion or flange c is provided with an annular groove (Z around its outer periphery. An adjustable collar or ring 6 loosely embraces the reduced portion or flan c and abuts against the shoulder around the inner portion of the same, and upon its outer edge said collar is provided with an inwardly-extending annular flange e, embracing the armature-shaft, and located such a distance from the inner end of the reduced portion 0 as to leave a space between the inner faces of the flange 6 and reduced portion 0 around the armature-shaft. An aperture or duct f extends from the interior bottom of the collar through the same to the exterior and opens above a drip-pan or extension g, extending from the base of the j ournal-box outwardly beneath the collar e, and provided with an inwardly-inclined bottom terminating in an inclined duct 72, extending through the base from the bottom of the drip-catch to the discharge-duct b. The interior of the adjustable collar is grooved from the inner end of the ductf to the flange c. (See Fig. The object of the construction just described is to keep all oil and grease from the commutator, and it will be readily seen that what does not pass out the discharge-duct I) will be caught in the annular space around the armatureshaft between flange e and portion 0 and passed through the ductf in the collar to the drippan, and. from thence through the inclined duct to the main discharge-duct b.

A brush-holder support "6 is deta'chably secured to collar e, and is composed of non-conducting material provided in its lower side with asemicircular recess, which fits upon and partially embraces the adjustable collar 6, and is detachably secured upon the same by one or more screws or the like. The support 6 is provided with laterally-extending arms, to which the brushholders and brushes 71; are secured. (See Fig. l.) The adjustable collar c is clamped in position upon the journal-box by a handle Z, extending upwardly from the brush-holder support, and

chine, and that the line of commutation of the brushes upon the commutator can be changed at any time by simply turning the handle Z until the pin on disengages the groove cl, and then turning the support andcollar (the collar loosely turning on the journal-box) until the brushes reach the desired point, and then clampin g the collar and support in position by screwing up the handle. If desired, the support 2' and collar 6 can be cast integral and the brush-holders can be insulated from the support.

It is evident that various changes might be made in the form and arrangement of the parts described Without departing from the spirit and scope of my invention; hence I do not wish to limit myself strictly to the construction herein set forth, but consider myself entitled to all such changes.

What I claim is- 1. A bearing for the armature-shaft, in combination with a collar loosely mounted upon the same and provided with an inwardly-extending annular flange surrounding the armature-shaft, and forming an annular space between itself and the edge of the bearing, and having a transverse aperture through the lower portion of the collar in communication with the space, and a brush-holder support carried by the collar, substantially as described.

2. In a dynamo or motor, an armature-shaft bearing having a reduced portion around its inner end, in combination with a collar loosely mounted upon the reduced portion and prosecured'to the collar, and a handle provided with a screw extendingthrough the support and collar, substantially as described.

4. An armature-shaft bearing, in combination with a collar loosely embracing the same, a brush-holder support partially embracing the collar and removably secured to the same, and a handle to adjustably clamp the parts in position, substantially as described.

5. In a dynamo or motor, the combination of a shaft-bearing, a collar embracing and adjustable around the same, and provided with an inwardly-extending annular flange at the inner edge of the bearing and surrounding the shaft, a brush-holder support carried by the collar, and a handle provided with a screwstud to extend through the collar and engage the bearing, substantially as described.

6. In a dynamo or motor, the combination, with an armature-shaft bearing, of a collar embracing and adjustable around the same,

a brush-holder support provided with a recess in its under side fitting upon the upper side of the collar, set-screws securing the support to the collar, and a handle to adjustably clamp the collar to the bearing, substantially as described.

In testimony that I claim the foregoing as my own I affiX my signature in presence of two witnesses.

JESSE F. KESTER.

Witnesses:

CHAS. M. WERLE, HUBERT E. PEcK. 

